1232 lines
34 KiB
Bash
1232 lines
34 KiB
Bash
set -eu
|
||
set -o pipefail
|
||
|
||
if (( "${NIX_DEBUG:-0}" >= 6 )); then
|
||
set -x
|
||
fi
|
||
|
||
: ${outputs:=out}
|
||
|
||
|
||
######################################################################
|
||
# Hook handling.
|
||
|
||
|
||
# Run all hooks with the specified name in the order in which they
|
||
# were added, stopping if any fails (returns a non-zero exit
|
||
# code). The hooks for <hookName> are the shell function or variable
|
||
# <hookName>, and the values of the shell array ‘<hookName>Hooks’.
|
||
runHook() {
|
||
local oldOpts="$(shopt -po nounset)"
|
||
set -u # May be called from elsewhere, so do `set -u`.
|
||
|
||
local hookName="$1"
|
||
shift
|
||
local hooksSlice="${hookName%Hook}Hooks[@]"
|
||
|
||
local hook
|
||
# Hack around old bash being bad and thinking empty arrays are
|
||
# undefined.
|
||
for hook in "_callImplicitHook 0 $hookName" ${!hooksSlice+"${!hooksSlice}"}; do
|
||
_eval "$hook" "$@"
|
||
set -u # To balance `_eval`
|
||
done
|
||
|
||
eval "${oldOpts}"
|
||
return 0
|
||
}
|
||
|
||
|
||
# Run all hooks with the specified name, until one succeeds (returns a
|
||
# zero exit code). If none succeed, return a non-zero exit code.
|
||
runOneHook() {
|
||
local oldOpts="$(shopt -po nounset)"
|
||
set -u # May be called from elsewhere, so do `set -u`.
|
||
|
||
local hookName="$1"
|
||
shift
|
||
local hooksSlice="${hookName%Hook}Hooks[@]"
|
||
|
||
local hook ret=1
|
||
# Hack around old bash like above
|
||
for hook in "_callImplicitHook 1 $hookName" ${!hooksSlice+"${!hooksSlice}"}; do
|
||
if _eval "$hook" "$@"; then
|
||
ret=0
|
||
break
|
||
fi
|
||
set -u # To balance `_eval`
|
||
done
|
||
|
||
eval "${oldOpts}"
|
||
return "$ret"
|
||
}
|
||
|
||
|
||
# Run the named hook, either by calling the function with that name or
|
||
# by evaluating the variable with that name. This allows convenient
|
||
# setting of hooks both from Nix expressions (as attributes /
|
||
# environment variables) and from shell scripts (as functions). If you
|
||
# want to allow multiple hooks, use runHook instead.
|
||
_callImplicitHook() {
|
||
set -u
|
||
local def="$1"
|
||
local hookName="$2"
|
||
case "$(type -t "$hookName")" in
|
||
(function|alias|builtin)
|
||
set +u
|
||
"$hookName";;
|
||
(file)
|
||
set +u
|
||
source "$hookName";;
|
||
(keyword) :;;
|
||
(*) if [ -z "${!hookName:-}" ]; then
|
||
return "$def";
|
||
else
|
||
set +u
|
||
eval "${!hookName}"
|
||
fi;;
|
||
esac
|
||
# `_eval` expects hook to need nounset disable and leave it
|
||
# disabled anyways, so Ok to to delegate. The alternative of a
|
||
# return trap is no good because it would affect nested returns.
|
||
}
|
||
|
||
|
||
# A function wrapper around ‘eval’ that ensures that ‘return’ inside
|
||
# hooks exits the hook, not the caller. Also will only pass args if
|
||
# command can take them
|
||
_eval() {
|
||
if [ "$(type -t "$1")" = function ]; then
|
||
set +u
|
||
"$@" # including args
|
||
else
|
||
set +u
|
||
eval "$1"
|
||
fi
|
||
# `run*Hook` reenables `set -u`
|
||
}
|
||
|
||
|
||
######################################################################
|
||
# Logging.
|
||
|
||
# Obsolete.
|
||
stopNest() { true; }
|
||
header() { echo "$1"; }
|
||
closeNest() { true; }
|
||
|
||
# Prints a command such that all word splits are unambiguous. We need
|
||
# to split the command in three parts because the middle format string
|
||
# will be, and must be, repeated for each argument. The first argument
|
||
# goes before the ':' and is just for convenience.
|
||
echoCmd() {
|
||
printf "%s:" "$1"
|
||
shift
|
||
printf ' %q' "$@"
|
||
echo
|
||
}
|
||
|
||
|
||
######################################################################
|
||
# Error handling.
|
||
|
||
exitHandler() {
|
||
exitCode="$?"
|
||
set +e
|
||
|
||
if [ -n "${showBuildStats:-}" ]; then
|
||
times > "$NIX_BUILD_TOP/.times"
|
||
local -a times=($(cat "$NIX_BUILD_TOP/.times"))
|
||
# Print the following statistics:
|
||
# - user time for the shell
|
||
# - system time for the shell
|
||
# - user time for all child processes
|
||
# - system time for all child processes
|
||
echo "build time elapsed: " "${times[@]}"
|
||
fi
|
||
|
||
if (( "$exitCode" != 0 )); then
|
||
runHook failureHook
|
||
|
||
# If the builder had a non-zero exit code and
|
||
# $succeedOnFailure is set, create the file
|
||
# ‘$out/nix-support/failed’ to signal failure, and exit
|
||
# normally. Otherwise, return the original exit code.
|
||
if [ -n "${succeedOnFailure:-}" ]; then
|
||
echo "build failed with exit code $exitCode (ignored)"
|
||
mkdir -p "$out/nix-support"
|
||
printf "%s" "$exitCode" > "$out/nix-support/failed"
|
||
exit 0
|
||
fi
|
||
|
||
else
|
||
runHook exitHook
|
||
fi
|
||
|
||
exit "$exitCode"
|
||
}
|
||
|
||
trap "exitHandler" EXIT
|
||
|
||
|
||
######################################################################
|
||
# Helper functions.
|
||
|
||
|
||
addToSearchPathWithCustomDelimiter() {
|
||
local delimiter="$1"
|
||
local varName="$2"
|
||
local dir="$3"
|
||
if [ -d "$dir" ]; then
|
||
export "${varName}=${!varName:+${!varName}${delimiter}}${dir}"
|
||
fi
|
||
}
|
||
|
||
PATH_DELIMITER=':'
|
||
|
||
addToSearchPath() {
|
||
addToSearchPathWithCustomDelimiter "${PATH_DELIMITER}" "$@"
|
||
}
|
||
|
||
# Add $1/lib* into rpaths.
|
||
# The function is used in multiple-outputs.sh hook,
|
||
# so it is defined here but tried after the hook.
|
||
_addRpathPrefix() {
|
||
if [ "${NIX_NO_SELF_RPATH:-0}" != 1 ]; then
|
||
export NIX_LDFLAGS="-rpath $1/lib $NIX_LDFLAGS"
|
||
if [ -n "${NIX_LIB64_IN_SELF_RPATH:-}" ]; then
|
||
export NIX_LDFLAGS="-rpath $1/lib64 $NIX_LDFLAGS"
|
||
fi
|
||
if [ -n "${NIX_LIB32_IN_SELF_RPATH:-}" ]; then
|
||
export NIX_LDFLAGS="-rpath $1/lib32 $NIX_LDFLAGS"
|
||
fi
|
||
fi
|
||
}
|
||
|
||
# Return success if the specified file is an ELF object.
|
||
isELF() {
|
||
local fn="$1"
|
||
local fd
|
||
local magic
|
||
exec {fd}< "$fn"
|
||
read -r -n 4 -u "$fd" magic
|
||
exec {fd}<&-
|
||
if [[ "$magic" =~ ELF ]]; then return 0; else return 1; fi
|
||
}
|
||
|
||
# Return success if the specified file is a script (i.e. starts with
|
||
# "#!").
|
||
isScript() {
|
||
local fn="$1"
|
||
local fd
|
||
local magic
|
||
if ! [ -x /bin/sh ]; then return 0; fi
|
||
exec {fd}< "$fn"
|
||
read -r -n 2 -u "$fd" magic
|
||
exec {fd}<&-
|
||
if [[ "$magic" =~ \#! ]]; then return 0; else return 1; fi
|
||
}
|
||
|
||
# printf unfortunately will print a trailing newline regardless
|
||
printLines() {
|
||
(( "$#" > 0 )) || return 0
|
||
printf '%s\n' "$@"
|
||
}
|
||
|
||
printWords() {
|
||
(( "$#" > 0 )) || return 0
|
||
printf '%s ' "$@"
|
||
}
|
||
|
||
######################################################################
|
||
# Initialisation.
|
||
|
||
|
||
# Set a fallback default value for SOURCE_DATE_EPOCH, used by some
|
||
# build tools to provide a deterministic substitute for the "current"
|
||
# time. Note that 1 = 1970-01-01 00:00:01. We don't use 0 because it
|
||
# confuses some applications.
|
||
export SOURCE_DATE_EPOCH
|
||
: ${SOURCE_DATE_EPOCH:=1}
|
||
|
||
|
||
# Wildcard expansions that don't match should expand to an empty list.
|
||
# This ensures that, for instance, "for i in *; do ...; done" does the
|
||
# right thing.
|
||
shopt -s nullglob
|
||
|
||
|
||
# Set up the initial path.
|
||
PATH=
|
||
for i in $initialPath; do
|
||
if [ "$i" = / ]; then i=; fi
|
||
addToSearchPath PATH "$i/bin"
|
||
done
|
||
|
||
if (( "${NIX_DEBUG:-0}" >= 1 )); then
|
||
echo "initial path: $PATH"
|
||
fi
|
||
|
||
|
||
# Check that the pre-hook initialised SHELL.
|
||
if [ -z "${SHELL:-}" ]; then echo "SHELL not set"; exit 1; fi
|
||
BASH="$SHELL"
|
||
export CONFIG_SHELL="$SHELL"
|
||
|
||
|
||
# Dummy implementation of the paxmark function. On Linux, this is
|
||
# overwritten by paxctl's setup hook.
|
||
paxmark() { true; }
|
||
|
||
|
||
# Execute the pre-hook.
|
||
if [ -z "${shell:-}" ]; then export shell="$SHELL"; fi
|
||
runHook preHook
|
||
|
||
|
||
# Allow the caller to augment buildInputs (it's not always possible to
|
||
# do this before the call to setup.sh, since the PATH is empty at that
|
||
# point; here we have a basic Unix environment).
|
||
runHook addInputsHook
|
||
|
||
|
||
# Package accumulators
|
||
|
||
# shellcheck disable=SC2034
|
||
declare -a pkgsBuildBuild pkgsBuildHost pkgsBuildTarget
|
||
declare -a pkgsHostHost pkgsHostTarget
|
||
declare -a pkgsTargetTarget
|
||
|
||
declare -ra pkgBuildAccumVars=(pkgsBuildBuild pkgsBuildHost pkgsBuildTarget)
|
||
declare -ra pkgHostAccumVars=(pkgsHostHost pkgsHostTarget)
|
||
declare -ra pkgTargetAccumVars=(pkgsTargetTarget)
|
||
|
||
declare -ra pkgAccumVarVars=(pkgBuildAccumVars pkgHostAccumVars pkgTargetAccumVars)
|
||
|
||
|
||
# Hooks
|
||
|
||
declare -a envBuildBuildHooks envBuildHostHooks envBuildTargetHooks
|
||
declare -a envHostHostHooks envHostTargetHooks
|
||
declare -a envTargetTargetHooks
|
||
|
||
declare -ra pkgBuildHookVars=(envBuildBuildHook envBuildHostHook envBuildTargetHook)
|
||
declare -ra pkgHostHookVars=(envHostHostHook envHostTargetHook)
|
||
declare -ra pkgTargetHookVars=(envTargetTargetHook)
|
||
|
||
declare -ra pkgHookVarVars=(pkgBuildHookVars pkgHostHookVars pkgTargetHookVars)
|
||
|
||
# Add env hooks for all sorts of deps with the specified host offset.
|
||
addEnvHooks() {
|
||
local depHostOffset="$1"
|
||
shift
|
||
local pkgHookVarsSlice="${pkgHookVarVars[$depHostOffset + 1]}[@]"
|
||
local pkgHookVar
|
||
for pkgHookVar in "${!pkgHookVarsSlice}"; do
|
||
eval "${pkgHookVar}s"'+=("$@")'
|
||
done
|
||
}
|
||
|
||
|
||
# Propagated dep files
|
||
|
||
declare -ra propagatedBuildDepFiles=(
|
||
propagated-build-build-deps
|
||
propagated-native-build-inputs # Legacy name for back-compat
|
||
propagated-build-target-deps
|
||
)
|
||
declare -ra propagatedHostDepFiles=(
|
||
propagated-host-host-deps
|
||
propagated-build-inputs # Legacy name for back-compat
|
||
)
|
||
declare -ra propagatedTargetDepFiles=(
|
||
propagated-target-target-deps
|
||
)
|
||
declare -ra propagatedDepFilesVars=(
|
||
propagatedBuildDepFiles
|
||
propagatedHostDepFiles
|
||
propagatedTargetDepFiles
|
||
)
|
||
|
||
# Platform offsets: build = -1, host = 0, target = 1
|
||
declare -ra allPlatOffsets=(-1 0 1)
|
||
|
||
|
||
# Mutually-recursively find all build inputs. See the dependency section of the
|
||
# stdenv chapter of the Nixpkgs manual for the specification this algorithm
|
||
# implements.
|
||
findInputs() {
|
||
local -r pkg="$1"
|
||
local -ri hostOffset="$2"
|
||
local -ri targetOffset="$3"
|
||
|
||
# Sanity check
|
||
(( "$hostOffset" <= "$targetOffset" )) || exit -1
|
||
|
||
local varVar="${pkgAccumVarVars[$hostOffset + 1]}"
|
||
local varRef="$varVar[\$targetOffset - \$hostOffset]"
|
||
local var="${!varRef}"
|
||
unset -v varVar varRef
|
||
|
||
# TODO(@Ericson2314): Restore using associative array once Darwin
|
||
# nix-shell doesn't use impure bash. This should replace the O(n)
|
||
# case with an O(1) hash map lookup, assuming bash is implemented
|
||
# well :D.
|
||
local varSlice="$var[*]"
|
||
# ${..-} to hack around old bash empty array problem
|
||
case "${!varSlice-}" in
|
||
*" $pkg "*) return 0 ;;
|
||
esac
|
||
unset -v varSlice
|
||
|
||
eval "$var"'+=("$pkg")'
|
||
|
||
if ! [ -e "$pkg" ]; then
|
||
echo "build input $pkg does not exist" >&2
|
||
exit 1
|
||
fi
|
||
|
||
# The current package's host and target offset together
|
||
# provide a <=-preserving homomorphism from the relative
|
||
# offsets to current offset
|
||
function mapOffset() {
|
||
local -ri inputOffset="$1"
|
||
if (( "$inputOffset" <= 0 )); then
|
||
local -ri outputOffset="$inputOffset + $hostOffset"
|
||
else
|
||
local -ri outputOffset="$inputOffset - 1 + $targetOffset"
|
||
fi
|
||
echo "$outputOffset"
|
||
}
|
||
|
||
# Host offset relative to that of the package whose immediate
|
||
# dependencies we are currently exploring.
|
||
local -i relHostOffset
|
||
for relHostOffset in "${allPlatOffsets[@]}"; do
|
||
# `+ 1` so we start at 0 for valid index
|
||
local files="${propagatedDepFilesVars[$relHostOffset + 1]}"
|
||
|
||
# Host offset relative to the package currently being
|
||
# built---as absolute an offset as will be used.
|
||
local -i hostOffsetNext
|
||
hostOffsetNext="$(mapOffset relHostOffset)"
|
||
|
||
# Ensure we're in bounds relative to the package currently
|
||
# being built.
|
||
[[ "${allPlatOffsets[*]}" = *"$hostOffsetNext"* ]] || continue
|
||
|
||
# Target offset relative to the *host* offset of the package
|
||
# whose immediate dependencies we are currently exploring.
|
||
local -i relTargetOffset
|
||
for relTargetOffset in "${allPlatOffsets[@]}"; do
|
||
(( "$relHostOffset" <= "$relTargetOffset" )) || continue
|
||
|
||
local fileRef="${files}[$relTargetOffset - $relHostOffset]"
|
||
local file="${!fileRef}"
|
||
unset -v fileRef
|
||
|
||
# Target offset relative to the package currently being
|
||
# built.
|
||
local -i targetOffsetNext
|
||
targetOffsetNext="$(mapOffset relTargetOffset)"
|
||
|
||
# Once again, ensure we're in bounds relative to the
|
||
# package currently being built.
|
||
[[ "${allPlatOffsets[*]}" = *"$targetOffsetNext"* ]] || continue
|
||
|
||
[[ -f "$pkg/nix-support/$file" ]] || continue
|
||
|
||
local pkgNext
|
||
for pkgNext in $(< "$pkg/nix-support/$file"); do
|
||
findInputs "$pkgNext" "$hostOffsetNext" "$targetOffsetNext"
|
||
done
|
||
done
|
||
done
|
||
}
|
||
|
||
# Make sure all are at least defined as empty
|
||
: ${depsBuildBuild=} ${depsBuildBuildPropagated=}
|
||
: ${nativeBuildInputs=} ${propagatedNativeBuildInputs=} ${defaultNativeBuildInputs=}
|
||
: ${depsBuildTarget=} ${depsBuildTargetPropagated=}
|
||
: ${depsHostHost=} ${depsHostHostPropagated=}
|
||
: ${buildInputs=} ${propagatedBuildInputs=} ${defaultBuildInputs=}
|
||
: ${depsTargetTarget=} ${depsTargetTargetPropagated=}
|
||
|
||
for pkg in $depsBuildBuild $depsBuildBuildPropagated; do
|
||
findInputs "$pkg" -1 -1
|
||
done
|
||
for pkg in $nativeBuildInputs $propagatedNativeBuildInputs; do
|
||
findInputs "$pkg" -1 0
|
||
done
|
||
for pkg in $depsBuildTarget $depsBuildTargetPropagated; do
|
||
findInputs "$pkg" -1 1
|
||
done
|
||
for pkg in $depsHostHost $depsHostHostPropagated; do
|
||
findInputs "$pkg" 0 0
|
||
done
|
||
for pkg in $buildInputs $propagatedBuildInputs ; do
|
||
findInputs "$pkg" 0 1
|
||
done
|
||
for pkg in $depsTargetTarget $depsTargetTargetPropagated; do
|
||
findInputs "$pkg" 1 1
|
||
done
|
||
# Default inputs must be processed last
|
||
for pkg in $defaultNativeBuildInputs; do
|
||
findInputs "$pkg" -1 0
|
||
done
|
||
for pkg in $defaultBuildInputs; do
|
||
findInputs "$pkg" 0 1
|
||
done
|
||
|
||
# Add package to the future PATH and run setup hooks
|
||
activatePackage() {
|
||
local pkg="$1"
|
||
local -ri hostOffset="$2"
|
||
local -ri targetOffset="$3"
|
||
|
||
# Sanity check
|
||
(( "$hostOffset" <= "$targetOffset" )) || exit -1
|
||
|
||
if [ -f "$pkg" ]; then
|
||
local oldOpts="$(shopt -po nounset)"
|
||
set +u
|
||
source "$pkg"
|
||
eval "$oldOpts"
|
||
fi
|
||
|
||
# Only dependencies whose host platform is guaranteed to match the
|
||
# build platform are included here. That would be `depsBuild*`,
|
||
# and legacy `nativeBuildInputs`, in general. If we aren't cross
|
||
# compiling, however, everything can be put on the PATH. To ease
|
||
# the transition, we do include everything in thatcase.
|
||
#
|
||
# TODO(@Ericson2314): Don't special-case native compilation
|
||
if [[ ( -z "${crossConfig-}" || "$hostOffset" -le -1 ) && -d "$pkg/bin" ]]; then
|
||
addToSearchPath _PATH "$pkg/bin"
|
||
fi
|
||
|
||
if [[ -f "$pkg/nix-support/setup-hook" ]]; then
|
||
local oldOpts="$(shopt -po nounset)"
|
||
set +u
|
||
source "$pkg/nix-support/setup-hook"
|
||
eval "$oldOpts"
|
||
fi
|
||
}
|
||
|
||
_activatePkgs() {
|
||
local -i hostOffset targetOffset
|
||
local pkg
|
||
|
||
for hostOffset in "${allPlatOffsets[@]}"; do
|
||
local pkgsVar="${pkgAccumVarVars[$hostOffset + 1]}"
|
||
for targetOffset in "${allPlatOffsets[@]}"; do
|
||
(( "$hostOffset" <= "$targetOffset" )) || continue
|
||
local pkgsRef="${pkgsVar}[$targetOffset - $hostOffset]"
|
||
local pkgsSlice="${!pkgsRef}[@]"
|
||
for pkg in ${!pkgsSlice+"${!pkgsSlice}"}; do
|
||
activatePackage "$pkg" "$hostOffset" "$targetOffset"
|
||
done
|
||
done
|
||
done
|
||
}
|
||
|
||
# Run the package setup hooks and build _PATH
|
||
_activatePkgs
|
||
|
||
# Set the relevant environment variables to point to the build inputs
|
||
# found above.
|
||
#
|
||
# These `depOffset`s, beyond indexing the arrays, also tell the env
|
||
# hook what sort of dependency (ignoring propagatedness) is being
|
||
# passed to the env hook. In a real language, we'd append a closure
|
||
# with this information to the relevant env hook array, but bash
|
||
# doesn't have closures, so it's easier to just pass this in.
|
||
_addToEnv() {
|
||
local -i depHostOffset depTargetOffset
|
||
local pkg
|
||
|
||
for depHostOffset in "${allPlatOffsets[@]}"; do
|
||
local hookVar="${pkgHookVarVars[$depHostOffset + 1]}"
|
||
local pkgsVar="${pkgAccumVarVars[$depHostOffset + 1]}"
|
||
for depTargetOffset in "${allPlatOffsets[@]}"; do
|
||
(( "$depHostOffset" <= "$depTargetOffset" )) || continue
|
||
local hookRef="${hookVar}[$depTargetOffset - $depHostOffset]"
|
||
if [[ -z "${crossConfig-}" ]]; then
|
||
# Apply environment hooks to all packages during native
|
||
# compilation to ease the transition.
|
||
#
|
||
# TODO(@Ericson2314): Don't special-case native compilation
|
||
for pkg in \
|
||
${pkgsBuildBuild+"${pkgsBuildBuild[@]}"} \
|
||
${pkgsBuildHost+"${pkgsBuildHost[@]}"} \
|
||
${pkgsBuildTarget+"${pkgsBuildTarget[@]}"} \
|
||
${pkgsHostHost+"${pkgsHostHost[@]}"} \
|
||
${pkgsHostTarget+"${pkgsHostTarget[@]}"} \
|
||
${pkgsTargetTarget+"${pkgsTargetTarget[@]}"}
|
||
do
|
||
runHook "${!hookRef}" "$pkg"
|
||
done
|
||
else
|
||
local pkgsRef="${pkgsVar}[$depTargetOffset - $depHostOffset]"
|
||
local pkgsSlice="${!pkgsRef}[@]"
|
||
for pkg in ${!pkgsSlice+"${!pkgsSlice}"}; do
|
||
runHook "${!hookRef}" "$pkg"
|
||
done
|
||
fi
|
||
done
|
||
done
|
||
}
|
||
|
||
# Run the package-specific hooks set by the setup-hook scripts.
|
||
_addToEnv
|
||
|
||
|
||
_addRpathPrefix "$out"
|
||
|
||
|
||
# Set the TZ (timezone) environment variable, otherwise commands like
|
||
# `date' will complain (e.g., `Tue Mar 9 10:01:47 Local time zone must
|
||
# be set--see zic manual page 2004').
|
||
export TZ=UTC
|
||
|
||
|
||
# Set the prefix. This is generally $out, but it can be overriden,
|
||
# for instance if we just want to perform a test build/install to a
|
||
# temporary location and write a build report to $out.
|
||
if [ -z "${prefix:-}" ]; then
|
||
prefix="$out";
|
||
fi
|
||
|
||
if [ "${useTempPrefix:-}" = 1 ]; then
|
||
prefix="$NIX_BUILD_TOP/tmp_prefix";
|
||
fi
|
||
|
||
|
||
PATH="${_PATH-}${_PATH:+${PATH:+:}}$PATH"
|
||
if (( "${NIX_DEBUG:-0}" >= 1 )); then
|
||
echo "final path: $PATH"
|
||
fi
|
||
|
||
|
||
# Make GNU Make produce nested output.
|
||
export NIX_INDENT_MAKE=1
|
||
|
||
|
||
# Normalize the NIX_BUILD_CORES variable. The value might be 0, which
|
||
# means that we're supposed to try and auto-detect the number of
|
||
# available CPU cores at run-time.
|
||
|
||
if [ -z "${NIX_BUILD_CORES:-}" ]; then
|
||
NIX_BUILD_CORES="1"
|
||
elif [ "$NIX_BUILD_CORES" -le 0 ]; then
|
||
NIX_BUILD_CORES=$(nproc 2>/dev/null || true)
|
||
if expr >/dev/null 2>&1 "$NIX_BUILD_CORES" : "^[0-9][0-9]*$"; then
|
||
:
|
||
else
|
||
NIX_BUILD_CORES="1"
|
||
fi
|
||
fi
|
||
export NIX_BUILD_CORES
|
||
|
||
|
||
# Prevent OpenSSL-based applications from using certificates in
|
||
# /etc/ssl.
|
||
# Leave it in shells for convenience.
|
||
if [ -z "${SSL_CERT_FILE:-}" ] && [ -z "${IN_NIX_SHELL:-}" ]; then
|
||
export SSL_CERT_FILE=/no-cert-file.crt
|
||
fi
|
||
|
||
|
||
######################################################################
|
||
# Textual substitution functions.
|
||
|
||
|
||
substitute() {
|
||
local input="$1"
|
||
local output="$2"
|
||
shift 2
|
||
|
||
if [ ! -f "$input" ]; then
|
||
echo "substitute(): ERROR: file '$input' does not exist" >&2
|
||
return 1
|
||
fi
|
||
|
||
local content
|
||
# read returns non-0 on EOF, so we want read to fail
|
||
if IFS='' read -r -N 0 content < "$input"; then
|
||
echo "substitute(): ERROR: File \"$input\" has null bytes, won't process" >&2
|
||
return 1
|
||
fi
|
||
|
||
while (( "$#" )); do
|
||
case "$1" in
|
||
--replace)
|
||
pattern="$2"
|
||
replacement="$3"
|
||
shift 3
|
||
;;
|
||
|
||
--subst-var)
|
||
local varName="$2"
|
||
shift 2
|
||
# check if the used nix attribute name is a valid bash name
|
||
if ! [[ "$varName" =~ ^[a-zA-Z_][a-zA-Z0-9_]*$ ]]; then
|
||
echo "substitute(): ERROR: substitution variables must be valid Bash names, \"$varName\" isn't." >&2
|
||
return 1
|
||
fi
|
||
pattern="@$varName@"
|
||
replacement="${!varName}"
|
||
;;
|
||
|
||
--subst-var-by)
|
||
pattern="@$2@"
|
||
replacement="$3"
|
||
shift 3
|
||
;;
|
||
|
||
*)
|
||
echo "substitute(): ERROR: Invalid command line argument: $1" >&2
|
||
return 1
|
||
;;
|
||
esac
|
||
|
||
content="${content//"$pattern"/$replacement}"
|
||
done
|
||
|
||
if [ -e "$output" ]; then chmod +w "$output"; fi
|
||
printf "%s" "$content" > "$output"
|
||
}
|
||
|
||
|
||
substituteInPlace() {
|
||
local fileName="$1"
|
||
shift
|
||
substitute "$fileName" "$fileName" "$@"
|
||
}
|
||
|
||
|
||
# Substitute all environment variables that start with a lowercase character and
|
||
# are valid Bash names.
|
||
substituteAll() {
|
||
local input="$1"
|
||
local output="$2"
|
||
local -a args=()
|
||
|
||
for varName in $(awk 'BEGIN { for (v in ENVIRON) if (v ~ /^[a-z][a-zA-Z0-9_]*$/) print v }'); do
|
||
if (( "${NIX_DEBUG:-0}" >= 1 )); then
|
||
printf "@%s@ -> %q\n" "${varName}" "${!varName}"
|
||
fi
|
||
args+=("--subst-var" "$varName")
|
||
done
|
||
|
||
substitute "$input" "$output" "${args[@]}"
|
||
}
|
||
|
||
|
||
substituteAllInPlace() {
|
||
local fileName="$1"
|
||
shift
|
||
substituteAll "$fileName" "$fileName" "$@"
|
||
}
|
||
|
||
|
||
######################################################################
|
||
# What follows is the generic builder.
|
||
|
||
|
||
# This function is useful for debugging broken Nix builds. It dumps
|
||
# all environment variables to a file `env-vars' in the build
|
||
# directory. If the build fails and the `-K' option is used, you can
|
||
# then go to the build directory and source in `env-vars' to reproduce
|
||
# the environment used for building.
|
||
dumpVars() {
|
||
if [ "${noDumpEnvVars:-0}" != 1 ]; then
|
||
export > "$NIX_BUILD_TOP/env-vars" || true
|
||
fi
|
||
}
|
||
|
||
|
||
# Utility function: echo the base name of the given path, with the
|
||
# prefix `HASH-' removed, if present.
|
||
stripHash() {
|
||
local strippedName
|
||
# On separate line for `set -e`
|
||
strippedName="$(basename "$1")"
|
||
if echo "$strippedName" | grep -q '^[a-z0-9]\{32\}-'; then
|
||
echo "$strippedName" | cut -c34-
|
||
else
|
||
echo "$strippedName"
|
||
fi
|
||
}
|
||
|
||
|
||
unpackCmdHooks+=(_defaultUnpack)
|
||
_defaultUnpack() {
|
||
local fn="$1"
|
||
|
||
if [ -d "$fn" ]; then
|
||
|
||
# We can't preserve hardlinks because they may have been
|
||
# introduced by store optimization, which might break things
|
||
# in the build.
|
||
cp -pr --reflink=auto -- "$fn" "$(stripHash "$fn")"
|
||
|
||
else
|
||
|
||
case "$fn" in
|
||
*.tar.xz | *.tar.lzma)
|
||
# Don't rely on tar knowing about .xz.
|
||
xz -d < "$fn" | tar xf -
|
||
;;
|
||
*.tar | *.tar.* | *.tgz | *.tbz2)
|
||
# GNU tar can automatically select the decompression method
|
||
# (info "(tar) gzip").
|
||
tar xf "$fn"
|
||
;;
|
||
*)
|
||
return 1
|
||
;;
|
||
esac
|
||
|
||
fi
|
||
}
|
||
|
||
|
||
unpackFile() {
|
||
curSrc="$1"
|
||
header "unpacking source archive $curSrc" 3
|
||
if ! runOneHook unpackCmd "$curSrc"; then
|
||
echo "do not know how to unpack source archive $curSrc"
|
||
exit 1
|
||
fi
|
||
}
|
||
|
||
|
||
unpackPhase() {
|
||
runHook preUnpack
|
||
|
||
if [ -z "${srcs:-}" ]; then
|
||
if [ -z "${src:-}" ]; then
|
||
# shellcheck disable=SC2016
|
||
echo 'variable $src or $srcs should point to the source'
|
||
exit 1
|
||
fi
|
||
srcs="$src"
|
||
fi
|
||
|
||
# To determine the source directory created by unpacking the
|
||
# source archives, we record the contents of the current
|
||
# directory, then look below which directory got added. Yeah,
|
||
# it's rather hacky.
|
||
local dirsBefore=""
|
||
for i in *; do
|
||
if [ -d "$i" ]; then
|
||
dirsBefore="$dirsBefore $i "
|
||
fi
|
||
done
|
||
|
||
# Unpack all source archives.
|
||
for i in $srcs; do
|
||
unpackFile "$i"
|
||
done
|
||
|
||
# Find the source directory.
|
||
|
||
# set to empty if unset
|
||
: ${sourceRoot=}
|
||
|
||
if [ -n "${setSourceRoot:-}" ]; then
|
||
runOneHook setSourceRoot
|
||
elif [ -z "$sourceRoot" ]; then
|
||
for i in *; do
|
||
if [ -d "$i" ]; then
|
||
case $dirsBefore in
|
||
*\ $i\ *)
|
||
;;
|
||
*)
|
||
if [ -n "$sourceRoot" ]; then
|
||
echo "unpacker produced multiple directories"
|
||
exit 1
|
||
fi
|
||
sourceRoot="$i"
|
||
;;
|
||
esac
|
||
fi
|
||
done
|
||
fi
|
||
|
||
if [ -z "$sourceRoot" ]; then
|
||
echo "unpacker appears to have produced no directories"
|
||
exit 1
|
||
fi
|
||
|
||
echo "source root is $sourceRoot"
|
||
|
||
# By default, add write permission to the sources. This is often
|
||
# necessary when sources have been copied from other store
|
||
# locations.
|
||
if [ "${dontMakeSourcesWritable:-0}" != 1 ]; then
|
||
chmod -R u+w -- "$sourceRoot"
|
||
fi
|
||
|
||
runHook postUnpack
|
||
}
|
||
|
||
|
||
patchPhase() {
|
||
runHook prePatch
|
||
|
||
for i in ${patches:-}; do
|
||
header "applying patch $i" 3
|
||
local uncompress=cat
|
||
case "$i" in
|
||
*.gz)
|
||
uncompress="gzip -d"
|
||
;;
|
||
*.bz2)
|
||
uncompress="bzip2 -d"
|
||
;;
|
||
*.xz)
|
||
uncompress="xz -d"
|
||
;;
|
||
*.lzma)
|
||
uncompress="lzma -d"
|
||
;;
|
||
esac
|
||
# "2>&1" is a hack to make patch fail if the decompressor fails (nonexistent patch, etc.)
|
||
# shellcheck disable=SC2086
|
||
$uncompress < "$i" 2>&1 | patch ${patchFlags:--p1}
|
||
done
|
||
|
||
runHook postPatch
|
||
}
|
||
|
||
|
||
fixLibtool() {
|
||
sed -i -e 's^eval sys_lib_.*search_path=.*^^' "$1"
|
||
}
|
||
|
||
|
||
configurePhase() {
|
||
runHook preConfigure
|
||
|
||
# set to empty if unset
|
||
: ${configureScript=}
|
||
: ${configureFlags=}
|
||
|
||
if [[ -z "$configureScript" && -x ./configure ]]; then
|
||
configureScript=./configure
|
||
fi
|
||
|
||
if [ -z "${dontFixLibtool:-}" ]; then
|
||
local i
|
||
find . -iname "ltmain.sh" -print0 | while IFS='' read -r -d '' i; do
|
||
echo "fixing libtool script $i"
|
||
fixLibtool "$i"
|
||
done
|
||
fi
|
||
|
||
if [[ -z "${dontAddPrefix:-}" && -n "$prefix" ]]; then
|
||
configureFlags="${prefixKey:---prefix=}$prefix $configureFlags"
|
||
fi
|
||
|
||
# Add --disable-dependency-tracking to speed up some builds.
|
||
if [ -z "${dontAddDisableDepTrack:-}" ]; then
|
||
if [ -f "$configureScript" ] && grep -q dependency-tracking "$configureScript"; then
|
||
configureFlags="--disable-dependency-tracking $configureFlags"
|
||
fi
|
||
fi
|
||
|
||
# By default, disable static builds.
|
||
if [ -z "${dontDisableStatic:-}" ]; then
|
||
if [ -f "$configureScript" ] && grep -q enable-static "$configureScript"; then
|
||
configureFlags="--disable-static $configureFlags"
|
||
fi
|
||
fi
|
||
|
||
if [ -n "$configureScript" ]; then
|
||
# Old bash empty array hack
|
||
# shellcheck disable=SC2086
|
||
local flagsArray=(
|
||
$configureFlags ${configureFlagsArray+"${configureFlagsArray[@]}"}
|
||
)
|
||
echoCmd 'configure flags' "${flagsArray[@]}"
|
||
# shellcheck disable=SC2086
|
||
$configureScript "${flagsArray[@]}"
|
||
unset flagsArray
|
||
else
|
||
echo "no configure script, doing nothing"
|
||
fi
|
||
|
||
runHook postConfigure
|
||
}
|
||
|
||
|
||
buildPhase() {
|
||
runHook preBuild
|
||
|
||
# set to empty if unset
|
||
: ${makeFlags=}
|
||
|
||
if [[ -z "$makeFlags" && ! ( -n "${makefile:-}" || -e Makefile || -e makefile || -e GNUmakefile ) ]]; then
|
||
echo "no Makefile, doing nothing"
|
||
else
|
||
# See https://github.com/NixOS/nixpkgs/pull/1354#issuecomment-31260409
|
||
makeFlags="SHELL=$SHELL $makeFlags"
|
||
|
||
# Old bash empty array hack
|
||
# shellcheck disable=SC2086
|
||
local flagsArray=(
|
||
${enableParallelBuilding:+-j${NIX_BUILD_CORES} -l${NIX_BUILD_CORES}}
|
||
$makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
|
||
$buildFlags ${buildFlagsArray+"${buildFlagsArray[@]}"}
|
||
)
|
||
|
||
echoCmd 'build flags' "${flagsArray[@]}"
|
||
make ${makefile:+-f $makefile} "${flagsArray[@]}"
|
||
unset flagsArray
|
||
fi
|
||
|
||
runHook postBuild
|
||
}
|
||
|
||
|
||
checkPhase() {
|
||
runHook preCheck
|
||
|
||
# Old bash empty array hack
|
||
# shellcheck disable=SC2086
|
||
local flagsArray=(
|
||
${enableParallelBuilding:+-j${NIX_BUILD_CORES} -l${NIX_BUILD_CORES}}
|
||
$makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
|
||
${checkFlags:-VERBOSE=y} ${checkFlagsArray+"${checkFlagsArray[@]}"}
|
||
${checkTarget:-check}
|
||
)
|
||
|
||
echoCmd 'check flags' "${flagsArray[@]}"
|
||
make ${makefile:+-f $makefile} "${flagsArray[@]}"
|
||
unset flagsArray
|
||
|
||
runHook postCheck
|
||
}
|
||
|
||
|
||
installPhase() {
|
||
runHook preInstall
|
||
|
||
if [ -n "$prefix" ]; then
|
||
mkdir -p "$prefix"
|
||
fi
|
||
|
||
installTargets="${installTargets:-install}"
|
||
|
||
# Old bash empty array hack
|
||
# shellcheck disable=SC2086
|
||
local flagsArray=(
|
||
$installTargets
|
||
$makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
|
||
$installFlags ${installFlagsArray+"${installFlagsArray[@]}"}
|
||
)
|
||
|
||
echoCmd 'install flags' "${flagsArray[@]}"
|
||
make ${makefile:+-f $makefile} "${flagsArray[@]}"
|
||
unset flagsArray
|
||
|
||
runHook postInstall
|
||
}
|
||
|
||
|
||
# The fixup phase performs generic, package-independent stuff, like
|
||
# stripping binaries, running patchelf and setting
|
||
# propagated-build-inputs.
|
||
fixupPhase() {
|
||
# Make sure everything is writable so "strip" et al. work.
|
||
local output
|
||
for output in $outputs; do
|
||
if [ -e "${!output}" ]; then chmod -R u+w "${!output}"; fi
|
||
done
|
||
|
||
runHook preFixup
|
||
|
||
# Apply fixup to each output.
|
||
local output
|
||
for output in $outputs; do
|
||
prefix="${!output}" runHook fixupOutput
|
||
done
|
||
|
||
|
||
# Propagate dependencies & setup hook into the development output.
|
||
declare -ra flatVars=(
|
||
# Build
|
||
depsBuildBuildPropagated
|
||
propagatedNativeBuildInputs
|
||
depsBuildTargetPropagated
|
||
# Host
|
||
depsHostHostPropagated
|
||
propagatedBuildInputs
|
||
# Target
|
||
depsTargetTargetPropagated
|
||
)
|
||
declare -ra flatFiles=(
|
||
"${propagatedBuildDepFiles[@]}"
|
||
"${propagatedHostDepFiles[@]}"
|
||
"${propagatedTargetDepFiles[@]}"
|
||
)
|
||
|
||
local propagatedInputsIndex
|
||
for propagatedInputsIndex in "${!flatVars[@]}"; do
|
||
local propagatedInputsSlice="${flatVars[$propagatedInputsIndex]}[@]"
|
||
local propagatedInputsFile="${flatFiles[$propagatedInputsIndex]}"
|
||
|
||
[[ "${!propagatedInputsSlice}" ]] || continue
|
||
|
||
mkdir -p "${!outputDev}/nix-support"
|
||
# shellcheck disable=SC2086
|
||
printWords ${!propagatedInputsSlice} > "${!outputDev}/nix-support/$propagatedInputsFile"
|
||
done
|
||
|
||
|
||
if [ -n "${setupHook:-}" ]; then
|
||
mkdir -p "${!outputDev}/nix-support"
|
||
substituteAll "$setupHook" "${!outputDev}/nix-support/setup-hook"
|
||
fi
|
||
|
||
# Propagate user-env packages into the output with binaries, TODO?
|
||
|
||
if [ -n "${propagatedUserEnvPkgs:-}" ]; then
|
||
mkdir -p "${!outputBin}/nix-support"
|
||
# shellcheck disable=SC2086
|
||
printWords $propagatedUserEnvPkgs > "${!outputBin}/nix-support/propagated-user-env-packages"
|
||
fi
|
||
|
||
runHook postFixup
|
||
}
|
||
|
||
|
||
installCheckPhase() {
|
||
runHook preInstallCheck
|
||
|
||
# Old bash empty array hack
|
||
# shellcheck disable=SC2086
|
||
local flagsArray=(
|
||
${enableParallelBuilding:+-j${NIX_BUILD_CORES} -l${NIX_BUILD_CORES}}
|
||
$makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
|
||
$installCheckFlags ${installCheckFlagsArray+"${installCheckFlagsArray[@]}"}
|
||
${installCheckTarget:-installcheck}
|
||
)
|
||
|
||
echoCmd 'installcheck flags' "${flagsArray[@]}"
|
||
make ${makefile:+-f $makefile} "${flagsArray[@]}"
|
||
unset flagsArray
|
||
|
||
runHook postInstallCheck
|
||
}
|
||
|
||
|
||
distPhase() {
|
||
runHook preDist
|
||
|
||
# Old bash empty array hack
|
||
# shellcheck disable=SC2086
|
||
local flagsArray=(
|
||
$distFlags ${distFlagsArray+"${distFlagsArray[@]}"} ${distTarget:-dist}
|
||
)
|
||
|
||
echo 'dist flags: %q' "${flagsArray[@]}"
|
||
make ${makefile:+-f $makefile} "${flagsArray[@]}"
|
||
|
||
if [ "${dontCopyDist:-0}" != 1 ]; then
|
||
mkdir -p "$out/tarballs"
|
||
|
||
# Note: don't quote $tarballs, since we explicitly permit
|
||
# wildcards in there.
|
||
# shellcheck disable=SC2086
|
||
cp -pvd ${tarballs:-*.tar.gz} "$out/tarballs"
|
||
fi
|
||
|
||
runHook postDist
|
||
}
|
||
|
||
|
||
showPhaseHeader() {
|
||
local phase="$1"
|
||
case "$phase" in
|
||
unpackPhase) header "unpacking sources";;
|
||
patchPhase) header "patching sources";;
|
||
configurePhase) header "configuring";;
|
||
buildPhase) header "building";;
|
||
checkPhase) header "running tests";;
|
||
installPhase) header "installing";;
|
||
fixupPhase) header "post-installation fixup";;
|
||
installCheckPhase) header "running install tests";;
|
||
*) header "$phase";;
|
||
esac
|
||
}
|
||
|
||
|
||
genericBuild() {
|
||
if [ -f "${buildCommandPath:-}" ]; then
|
||
local oldOpts="$(shopt -po nounset)"
|
||
set +u
|
||
source "$buildCommandPath"
|
||
eval "$oldOpts"
|
||
return
|
||
fi
|
||
if [ -n "${buildCommand:-}" ]; then
|
||
local oldOpts="$(shopt -po nounset)"
|
||
set +u
|
||
eval "$buildCommand"
|
||
eval "$oldOpts"
|
||
return
|
||
fi
|
||
|
||
if [ -z "${phases:-}" ]; then
|
||
phases="${prePhases:-} unpackPhase patchPhase ${preConfigurePhases:-} \
|
||
configurePhase ${preBuildPhases:-} buildPhase checkPhase \
|
||
${preInstallPhases:-} installPhase ${preFixupPhases:-} fixupPhase installCheckPhase \
|
||
${preDistPhases:-} distPhase ${postPhases:-}";
|
||
fi
|
||
|
||
for curPhase in $phases; do
|
||
if [[ "$curPhase" = buildPhase && -n "${dontBuild:-}" ]]; then continue; fi
|
||
if [[ "$curPhase" = checkPhase && -z "${doCheck:-}" ]]; then continue; fi
|
||
if [[ "$curPhase" = installPhase && -n "${dontInstall:-}" ]]; then continue; fi
|
||
if [[ "$curPhase" = fixupPhase && -n "${dontFixup:-}" ]]; then continue; fi
|
||
if [[ "$curPhase" = installCheckPhase && -z "${doInstallCheck:-}" ]]; then continue; fi
|
||
if [[ "$curPhase" = distPhase && -z "${doDist:-}" ]]; then continue; fi
|
||
|
||
if [[ -n $NIX_LOG_FD ]]; then
|
||
echo "@nix { \"action\": \"setPhase\", \"phase\": \"$curPhase\" }" >&$NIX_LOG_FD
|
||
fi
|
||
|
||
showPhaseHeader "$curPhase"
|
||
dumpVars
|
||
|
||
# Evaluate the variable named $curPhase if it exists, otherwise the
|
||
# function named $curPhase.
|
||
local oldOpts="$(shopt -po nounset)"
|
||
set +u
|
||
eval "${!curPhase:-$curPhase}"
|
||
eval "$oldOpts"
|
||
|
||
if [ "$curPhase" = unpackPhase ]; then
|
||
cd "${sourceRoot:-.}"
|
||
fi
|
||
done
|
||
}
|
||
|
||
|
||
# Execute the post-hooks.
|
||
runHook postHook
|
||
|
||
|
||
# Execute the global user hook (defined through the Nixpkgs
|
||
# configuration option ‘stdenv.userHook’). This can be used to set
|
||
# global compiler optimisation flags, for instance.
|
||
runHook userHook
|
||
|
||
|
||
dumpVars
|
||
|
||
# Disable nounset for nix-shell.
|
||
set +u
|